there have been 和there has been是怎么用的

相关推荐

• would you like some pears?--No,thanks.I think there ___ enough for usA.is B.are C,has been D.had beenc是不是应该改为have been因为pears 是复数,B也错了,因为要用完成时态请问,你觉得呢?
• 亲们快来~几道时态填空题/这一课的题目是现在完成时.1时态填空：1）There____________(be)great changes in Shanghai during the past decade.Shanghai _________________(become)more and more beartiful .2)The German engineer ___________________(collect)a lot of Chinese stamps since he came to China,for he _________________(appreciate)Chinese history and culture2用have/has been (to) ,have/has been in ,have/has gone to 填空Where is Sara?She_____1_____Australia.Sounds great.___2_she ________2____
• 有什么办法可以区别沼气、二氧化碳和空气游莫干山时,某同学一家在山道旁发现一个不停冒泡的水坑.这里冒出的是什么气体呢?该同学认为可能是二氧化碳,爸爸认为可能是沼气,妈妈认为可能是空气.他们利用火柴、竹枝、矿泉水瓶展开了以下探究：(1)用矿泉水瓶收集两瓶气体,如图所示.该同学收集气体的方法是 ▲ ；(2)该同学用竹枝夹持燃着的火柴在瓶口进行点火试验,既没有听到爆鸣声,也没有观察到气体燃烧.根据此现象可以判断 ▲ 的猜测是错误的.为了进一步判断该气体的成分,该同学还需要进行的操作是 ▲ .我不是要答案,要原因.最好把每一步怎么想的写出来.沼气中不是也含有大量二氧化碳,那么气体又为何会燃烧?
• 1道高中英语单选Although we have been working in the same office for several years,she ______me much impression.A.didn'tleave B.doesn't leave为什么?这考察的是哪部分内容?有没有类似的题告诉我几道?我现在要突破单选!
• 我主要想说的是沼气,天然气,液化石油气怎么用甲烷的含量来区分,有什么依据和规范或标准能来说明它们中含有甲烷的含量百分比,天然气,沼气,液化石油气中甲烷含量分别是多少,有什么依据和规范或标准
• 罗素：“信仰基督教的人大多都是极其邪恶”“基督教作为有组织的教会,过去是,现在依然是世界道德进步的罗素：“信仰基督教的人大多都是极其邪恶的” The people who have held to Christian religion have been for the most part extremely wicked“基督教作为有组织的教会,过去是,现在也依然是世界道德进步的主要敌人.I say quite deliberately that the Christian religion,as organized in its churches,has been and still is the principal enemy of moral progress in the world.
• 两道2012辽宁高考英语单选题,求答疑33.Jack is a great talker.It's high time that he_______ something instead of just talking..It's high time that 啥意思?A.will do B.has done C do Ddid（答案D,我选A）35.Mum,I was wondering if you could lend me a few dollars until I __________ on Friday.A.get paid B.got paid C have paid D had been paid（答案是A,我选B）get ,have 搭配词组有啥区别?最好每个选项都能解释下~
• 什么是to be和to have句型写作文用的
• 老王比小王大28,7年后,老王的年龄是小王的3倍.问今年老王和小王各多少岁.1.不要一元方程式.2.要有流程,每步是什么目的.想问的是怎么计算出来的,答案用一元方程式很容易解出来,现在是要用小学3年级的知识来做,还是有点难度的.重要的是流程,不然我不知道怎么跟小孩解释
• in the history和in history 的区别就是这样一道选择题There have been many changes in _____ history of _____ English language.A.a;the B.the;/ C./;the D.the;the
• 甲状腺激素与垂体的关系是什么?
• 用下面的长方形纸围成一个圆柱,它的底面半径和高分别是多少厘米?长方形的长是25.12cm,宽是18.84cm.